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Z8F012APB020SC 参数 Datasheet PDF下载

Z8F012APB020SC图片预览
型号: Z8F012APB020SC
PDF下载: 下载PDF文件 查看货源
内容描述: Z8喝采XP -R 4K系列高性能8位微控制器 [Z8 Encore XP-R 4K Series High-Performance 8-Bit Microcontrollers]
分类和应用: 微控制器外围集成电路光电二极管时钟
文件页数/大小: 276 页 / 3422 K
品牌: ZILOG [ ZILOG, INC. ]
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Z8 Encore! XP® 4K Series  
Product Specification  
20  
Reset, STOP Mode Recovery and Low  
Voltage Detection  
Overview  
The Reset Controller within the Z8 Encore! XP® 4K Series controls Reset and STOP  
Mode Recovery operation and provides indication of low supply voltage conditions. In  
typical operation, the following events cause a Reset:  
Power-on reset (POR)  
Voltage brown-out (VBO)  
Watch-Dog Timer time-out (when configured by the WDT_RES Flash Option Bit to  
initiate a reset)  
External RESET pin assertion (when the alternate RESET function is enabled by the  
GPIO register)  
On-chip debugger initiated Reset (OCDCTL[0] set to 1)  
When the device is in STOP mode, a STOP Mode Recovery is initiated by either of the  
following:  
Watch-Dog Timer time-out  
GPIO Port input pin transition on an enabled STOP Mode Recovery source  
The low voltage detection circuitry on the device (available on the 8-pin product versions  
only) performs the following functions:  
Generates the VBO reset when the supply voltage drops below a minimum safe level  
Generates an interrupt when the supply voltage drops below a user-defined level (8-pin de-  
vice only)  
Reset Types  
The Z8 Encore! XP® 4K Series provides several different types of Reset operation. STOP  
Mode Recovery is considered a form of Reset. Table 9 lists the types of Reset and their  
operating characteristics. The System Reset is longer if the external crystal oscillator is  
enabled by the Flash option bits, allowing additional time for oscillator start-up.  
PS022815-0206  
Reset, STOP Mode Recovery and Low Voltage Detection